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Dictionary


ple'num ventila"tion




a system of mechanical ventilation in which fresh air is forced into the spaces to be ventilated from a chamber (ple'num cham"ber) at a pressure slightly higher than atmospheric pressure, so as to expel foul air.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

plenumpleo-

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